The effect of MgCl2.6H2O and NaF on properties of Chitosan / HA-Al2O3 Scaffold
Fateme Mirjalili
1
(
Department of material engineering,faculty of engineering,Islamic azad university Maybod beranch,Iran
)
esmail salahi
2
(
Energy and Environmental Department, Materials and Energy Research Center, P.O. Box 31787-316, Karaj, Iran
)
Ali kaffashiyan
3
(
2Department of Material Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
)
Keywords: Alumina, scaffold, HA, nano, Chitosan/ HA- Al2O3 scaffold,
Abstract :
The HA- Al2O3 nano composite was produced by precipitation method. In the first study,the effect of MgCl2.6H2O and NaF additives on HA-Al2O3 nano-composite powder were studied and the second, chitosan / HA- Al2O3 scaffold was prepared by freeze casting method. The phase and microstructure and morphology analysis of nano composite and scaffold were performed by XRD, FT-IR, FESEM and TEM. X-ray diffraction test results along with infrared spectroscopy indicated that, the HA- Al2O3 nano composite without impurities were produced. TEM result showed that, the produced nano cmposite particle sizes were reported between 30-50 nm.Moreover, the porosity percentages of scaffold without additive was about 56% and with NaF as an additive was about 63 %, however, the scaffold with MgCl2.6H2O additive with 70% porosity had the highest porosity percentage. The compressive strength of the SFA scaffold exhibited a two-fold strength compared to the SMA scaffold, which indicated the improved mechanical compatibility of the SFA scaffold.